Facebook's annual "Year In Review" feature recaps moments that users shared on the social media site during the past year, but PC Magazine reported Friday that a glitch that might be related to the feature is concerning to some.

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The glitch resurfaces months-old photos on friend's news feeds.

PC Magazine writer Stephanie Mlot first saw the issue on her own Facebook feed and noted that some users posted about the issue on the Facebook help community.

The Wall Street Journal reported that Facebook has a feature called "On This Day," which allows users to choose whether or not to share older photos that have previously been posted to Facebook.

The reported glitch posts older photos to friends' news feed without the user's permission. According to the Wall Street Journal, the photos look as if they have been posted for the first time, with a current timestamp and no reactions or comments.

"We are aware of this and are investigating," a spokesperson for Facebook told PC Magazine.